The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2009
Filed:
Sep. 18, 2003
Eckhard Stroefer, Mannheim, DE;
Stephan Scholl, Braunschweig, DE;
Martin Sohn, Mannheim, DE;
Andreas Woelfert, Bad Rappenau, DE;
Hans-juergen Pallasch, Ludwigshafen, DE;
Jan Peter Bredehoeft, Boehl-Iggelheim, DE;
Eckhard Stroefer, Mannheim, DE;
Stephan Scholl, Braunschweig, DE;
Martin Sohn, Mannheim, DE;
Andreas Woelfert, Bad Rappenau, DE;
Hans-Juergen Pallasch, Ludwigshafen, DE;
Jan Peter Bredehoeft, Boehl-Iggelheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Isocyanates are prepared by reacting primary amines with phosgene in a reactor by a process in which a reaction discharge is present in the form of a suspension which contains the isocyanate to be prepared, as a liquid, and carbamyl chlorides as a solid, and the suspension is worked up in a film evaporator, and this process is carried out in a production plant.